325668816 has 160 divisors (see below), whose sum is σ = 1073740800. Its totient is φ = 93467520.

The previous prime is 325668803. The next prime is 325668817. The reversal of 325668816 is 618866523.

325668816 is a `hidden beast` number, since 3 + 2 + 566 + 8 + 81 + 6 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325668817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88485 + ... + 92091.

It is an arithmetic number, because the mean of its divisors is an integer number (6710880).

Almost surely, 2^325668816 is an apocalyptic number.

325668816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325668816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536870400).

325668816 is an abundant number, since it is smaller than the sum of its proper divisors (748071984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

325668816 is a wasteful number, since it uses less digits than its factorization.

325668816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654 (or 3642 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 325668816 is about 18046.2964621553. The cubic root of 325668816 is about 688.0057350342.

The spelling of 325668816 in words is "three hundred twenty-five million, six hundred sixty-eight thousand, eight hundred sixteen".